Edge-finishing seam for pile-fabric articles and method of making the same



Oct. 17,1944. 3. w, w sso 2,360,747 EDGE FINISHING SEAM FOR FILE-FABRIC ARTICLES,

AND METHOD OF MAKING THE SAME Filed Sept. 3, 1942 2 Sheets-Sheet l Oct. 17, 1944. G..w.-wl-:ssoN 2,360,747

EDGE FINISHING SEAM FOR FILE-FABRIC ARTICLES,

AND METHOD OF MAKING THE SAME Filed Sept. 3, 1942 2 Sheets-Sheet? Georye [a we, on

- w' grweom" I l Patented Oct. 17, 1944 EDGE-FINISHING 'SEAM FOR FILE-FABRIC ARTICLES .AN D M-ETHODQOF THE SAME 'George W. Wesson, Bridgeport, Conn. assignor to'flhe Singer Manufacturing Gom pany, Elizabeth, N. J., a corporation of New Jersey ApplicationSeptember 3, 1942, Serial .No. 457,156

7 Claims.

This invention .relates :to methods of sewing and seams :f or sewed articles. 7

An object of the invention is to provide an improved edge-finishing seam .;for pile-fabric articles,*wherebyitheiaw:edges of the base-fabric .of the articles are-securelygbound and the hindn -is neat and inconspicuousin appearance,

Another object of the inventionis to provide an improved :method of finishing the edges of pile-fabric :articles, .thereby to facilitate and speed production of the edge-finishing seams. Other andrmorespecific objects-of the invention will be apparent from .thetfollowing description and claims.

The invention :consists in .the ledge-finishing seam and the method vof making the same as hereinafterdescribedin connection .with the ac.-

companying drawings .of a specific embodiment of the invention and in which:

Fig. ;1 is a perspective view, partly in section of a rug .edge :with a binding strip attached thereto in accordance ;.with .the first step of the p esent method.

-,Fig. .2 is :a perspective .viewof a portion of a u .edge finishedin accordance with the present "method.

Fig. .3 is an enlarged sectional view of the present .rug-edge-finishing seam; the section being taken substantially on ;the;line IIII II of Fi 2.

Fig. 4 is a plan view of p ta Sewing chine by which zthe :first part of the present method maybe practiced.

Fig. ,5;is;a:section on :theline 55, Fig. A, and

:Fig. 6;is a section :on the1line 6--6, Fig. 4, with therrug edge and binding .strip in their relative positions vfor attachment by the reciprocatory needles .;of the machine.

;l g.".7 is j an enlarged perspective-view showing a thread arrangement employed in the present invention.

.Referring,;more specifically-to Fig. 1 there is shown a;portion-of;a :pile fabric articlehaving pilefibres l -;-rising..from one face of awoven base materializ-having a raw edge portion 3. A binding-strip 4 has :a longitudinal edge portion 5 thereof secured substantially in edge-to-edge register and face-to-face contact .with the pileface of Saidarticleby meansof a line or row of penetrant thread loop structures '6 positioned adjacent said registerededges and penetrating both :binding strip .4 and base :material 2. The thread loopstruoturesfi are keyed on the back face .of ;,the,-;basematerial zby thread structures I which .in-vturn; are KBYBdItOqthGibfiCk face of the :base mat r a by m a f a seco d line or r o :p n t n thread 1 90p s u ur e trat on the ba mater .Lhurie i the-p fi re 1 a d pos tioned mo remotely rom -,the raw v5 edge portion 3 than said v fi rst row of thread loop structures 6.

In a sub quent ene ation-th b nd n str s olded about the'lineo bi ding-st ip :nenet a t h ead-loop zfi and ithe raw ed e porti n 5.3 into 10 gengagementiwith the back faceof the basemate- :rial '2 was ,totcoyerexposedzparts-of the thread gstnuctures 6, and 8. The binding strip in its folded position, is then secured ,to :the base material 2 ;by.=a.ny standard method but prefer- 15 -ab1y by means of .a :IQW of $100k stitches ;,9 as shown and described in :my prior 8. Patent 2N0. 2,298,665,, "October :3, 19.42.

rEreferably, but @not necessarily, :the thread ear,- :rangement, as shown {in Fig. '7, comprises two '20 esl'lbs tantially parallel-dines .ojf ;thr ead':1oops :6 and :8, oon-nested eby a :single thread :1 passedsucces- .s'ively through said loops ;to ;lock :them in the "material penetrated byisaid loops.

It '.is evident :iromethe description given above 1.25 that ;theiedge finishing,seamdescribed-above may :be'pro'duced :by a;series :of separate operations.

However, the :method of :this ;;invention vmay zbe Fznore convenientlyznracticed .byemploying a sew,-

ging machine in part :herein :illustrated and more fully -shown and :described in :.my ,copending :patzent application 2 Serial fNO. 141537 155, ifiledt herewith, andnowmaturedinto;Patent No. 2,346,637,.dated April 11, 1944.

For making the edge-finishing seam according -to :the:present-inve ntion, a sewing .machineg hav- .ingtwo endwise .reciprocatory needles 31,0 and II .cooperating with ,a single ,rotary shuttle (not shown) disposed below bed-plate 1:2, may :be

' provided with a 'presser-foot having adjacent .40 :treadportions [23 and zl;4;latera1ly spaced to pro.-

Vide. therebetween a work-rclearance. slot J15. 'L'IThe 1presser-foot is -yieldingly opposed .-to a :fourmotion-feed-dog I15 operating through deed-slots -in a throat-plate ll to advance -;the-..work .along ;the zwork-support. The shuttle rotates in aivertieal plane transverse :to the .line of feed and :functionsto seizeboth of the thread :loops presented. 'by the two needles :and to -carr-y said thread-loopsaboutamass of under-thread. As the stitch-forming mechanism referred to is well known .in the fart, adetailed description .thereof is deemed unessential to an understanding of .thelpresent invention. a

*A stripguide tube mayzbe provided having an 'L-shaped strippassageway with the vertical portion l8 disposed to extend into the slot I and the horizontal portion [9 disposed beneath the tread portion I3 in advance of the needle ID, to guide the binding strip 4 into proper edge-register and face-contacting relation with the pile fabric article and to present them together in said relation to the needle l0 which may apply the thread loops 6 thereto.

The tread portion [4 of the presser-foot may be provided with a depending pile-dividing plow' the edge of the pile-fabric article.

It is evident from the above description that the pile-fabric material is fed through the machine fiatly, straightly and with the pile face up and thus does not require special handling which would impede production.

It will be obvious to those skilled in the art that the invention may, without departure from its essential attributes, be embodied in various specific forms other than those shown and described which latter are to be considered in all respects as illustrative of the invention and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having thus set forth the nature of the invention, what I claim herein is:

1. In the method of finishing the raw edge of the base-fabric of a pile article, the steps including superimposing a longitudinal margin of a binding strip upon the pile face of the raw-edge margin of the base-fabric with the body of said strip disposed entirely at the base-fabric side of said raw edge; passing separate and substantially parallel rows of thread-loops through said base-fabric, a first of said rows of threadloops penetrating the strip and base-fabric margins in proximity to the raw edge of the basefabric, and a second of said rows of thread-loops being free of said strip and buried in the pile of the article at the side of said first row of threadloops opposite the raw edge of the base-fabric; and anchoring the first of said rows of threadloops to the second of said rows.

2. In the method of finishing the raw edge of the base-fabric of a pile article, the steps including superimposing a longitudinal margin of a binding strip upon the pile face of the raw-edge margin of the base-fabric with the bodies of said strip and base-fabric both disposed at the same side of said raw edge of the base-fabric; passing separate and substantially parallel rows of thread-loops through said base-fabric, a first of said rows of thread-loops penetrating the strip and base-fabric margins in proximity to the raw edge of the base-fabric, and a second of said rows of thread-loops being free of said strip and buried in the pile of the article at the side of said first row of thread-loops opposite the raw edge of the base-fabric; forming a furrow in said pile to receive said second row of thread-loops, and anchoring the first of said rows of thread-loops to the second of said rows.

3. The method of binding the margin of a body-fabric having top and bottom faces, comprising the steps of securing one edge of a bindasset-r2 ing strip to the top face of the body-fabric margin by a first stitching thread passed through the binding strip and the body-fabric; simultaneously passing a second stitching thread through only the body-fabric a substantially fixed distance from said first stitching thread on the side thereof which is remote from said body fabric margin; concatenating said first and second stitching threads on the side of the body-fabric opposite to the strip-face thereof; thereafter folding the binding strip around the seamed marginal edge of the body-fabric into engagement with the bottom face of said body-fabric; and securing said binding strip to said body fabric in said folded relation by a row of stitches more remote from said raw edges than said second stitching thread.

4. The method of applying a binding strip to the edge of a body-fabric having a pile face and a back face comprising the steps of superimposing one longitudinal marginal portion of the binding-strip upon one longitudinal marginal portion of the pile face with said portions in substantial edge-to-edge register; applying a row of thread-loops disposed substantially parallel and proximate to the registered edges and penetrating both binding strip and body fabric; applying an additional row of thread loops penetrating only the body fabric and disposed parallel to said registered edges and more remote therefrom than said proximate row; anchoring the threadloops in said proximate row to those in the more remote row by thread means applied on the back face of the body fabric; folding said binding strip about the registered edges into engagement with the back face of the body-fabric to cover the stitched portion; and securing said binding strip to the back face of said body fabric.

5. The method of binding the raw edge of a rug of pile-fabric which consists in simultaneously presenting the rug edge and superposed edge of a binding strip to a sewing machine having two needles and a loop-taker complemental to both of said needles in the formation of stitches, with the rug face up and with the binding strip bent upwardly between the two needles so that only one of the needles penetrates both the strip and the rug to scam the two materials together; and in thereafter folding the unattached portion of the binding strip about said rug-edge and securing it to the back of the rug.

6. In a rug-edge-finishing seam, a rug-body comprising a woven base having a face and back with pile-fibres attached to said base and projecting from the face side of the latter, said base having a raw edge, a binding strip having an edge-portion in juxtaposition with said raw edge; a first stitching thread passed through both the binding strip and the rug-body adjacent said juxtaposed edges, a second stitching thread passed through the rug-body only and disposed on the side of said first stitching thread remote from said raw edge, a third thread disposed on the back of said rug-body in concatenation with said first and second threads, said binding strip being folded over said first stitching thread'and about said raw edge into engagement with the back of the rug in covering relation to said third thread, and additional means securing the folded binding strip to the back of the rug.

7. In the method of finishing the raw edge of a base-fabric, the steps comprising superimposing a longitudinal margin ofv a binding-strip upon the top face of the raw edge -margin of the basefabric with the body of said strip disposed entirely at the base-fabric Side of said raw edge; passing separate and substantially parallel rows of thread loops through said base-fabric, a first of said rows of thread loops penetrating the strip and base-fabric margins in proximity to the raw 5 edge of the base-fabric, and a second of said rows of thread loops being free of said strip and more remote from said raw edge; concatenating GEORGE W. WESSON. 

